A hard one to fix for sure, I used FFT (Fourier Transform) to reduce the pattern of the photo paper, from there it was selective noise reduction methods and then deal with the red, green, blue and cyan noise in the gown. Shrink the image a little and finally some selective blur. This was between 5 and 10 minutes to do so with some time and care you can improve on it. This as you probably know will never be a great image.